Answer:
y = 4
Step-by-step explanation:
y - 1 = √y + 5
(y - 1)² = y + 5 (Square both sides)
y² - 2y + 1 = y + 5 (Expand left side)
y² - 3y - 4 = 0 (Subtract y and 5 from both sides)
(y + 1) (y - 4) = 0 (Factor)
y = -1, 4 (Use ZPP)
When we check y = -1 we see that it is not a solution so the answer is y = 4.
Answer:
1.19
Step-by-step explanation:
1) Shift the decimals of both 0.8449 and 0.71 to the right by 2 decimal places. (This is needed to convert 0.71 to 71, since long division must divide by a whole number.)
84.49 ÷ 71
2) Use the algorithm method.
1 . 1 9
7 1 | 8 4 . 4 9
7 1 .
1 3 . 4
7 . 1
6 . 3 9
6 . 3 9
3) Therefore, 0.8449 ÷ 0.71 = 1.19.
1.19
The answers to this question are y = -3x - 2 and 3x + y = -2
y + 5 = -3(x - 1)
y + 5 = -3x + 3
y = -3x - 2 --> a choice
3x + y = -2 -- > a choice
Answer:
30
Step-by-step explanation:
Substitute j = 1, 2, 3, 4, 5 into 2j and sum the terms, that is
2(1) + 2(2) + 2(3) + 2(4) + 2(5)
= 2 + 4 + 6 + 8 + 10
= 30
Answer:
Yes.
Step-by-step explanation:
This is an Equilateral Triangle. If all angles are congruent, then all sides are congruent as well.
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